I've got a problem with my project. I have 27 .mtl files in my project.
When I made a modification on a template which is imported by several other mtl modules, many errors appear
(Notice that the modification I talk about is quite elementary : adding a whitespace).

I need to call a 'clean action' on my project to remove Acceleo errors...

Have you ever had this problem?

It seems that the dependencies between modules are not properly taken into account during automatic build ...

There is a known bug with compilation errors that appears when the file is not saved and that disappear when you save the file. But I don't think that we have an opened bug for this. I'll open an entry on the bugzilla and we will investigate it.